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PDF Assistant is an extremely versatile application that allows you to:
  • Fully customise how you view and read PDFs (including a iBook-like mode)
  • Underline or highlight passages
  • Add graphic elements (arrows, call outs, circles, etc.)
  • Take notes
  • Grab selections
  • And export all of your notes to a separate file.
  • Double View Mode - book reader style with swiping pages or standard scrolling page
  • Easy Underlining/Highlighting - in any color
  • Take Notes - jot notes down right on the PDF page
  • Draw - add arrows, call outs, shapes
  • more...

What's New

Version 1.4:
  • Zoom in / zoom out fixed
  • Cmd+ / Cmd- behavior fixed, both pages zoomed when these shortcut keys are pressed


  • OS X 10.7 or later

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PDF Assistant User Discussion

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Sgginc Member IconReview+226

Rating. Comments below. 5 star app!

Reply0 replies
Version 1.3
Sgginc Member IconComment+226

I purchased the PDF Assistant Pro from MU daily deal.
Now the progtam is renamed and updated to v1.3 but will not take my s/n.
Developer's site will not allow any help.

Take caution if you are considering purchasing.

Reply3 replies
Version 1.3

Hi, we apologise for the inconvenience, the tech support site is fixed, now you can register there or write me directly at l.mesentsev@gmail.com, we will help you.


Developer responded immediately and fixed my issue and web site. THANKS!!!
This is a GREAT program.
Only suggestion would be to have the Table Of Contents window stick around after selecting a page.


Kenneth, just open the Preferences, tab Popover Windows and uncheck "Close automatically when not in use". This will stick the Table Of Contents window.

Sgginc Member IconComment+226

This is a great PDF Program!

One suggestion:
Have the Table Of Contents window stay open.
Now it disappears after selecting a page.
Very unproductive if your searching for something.
Also fix your support page so a new account can be created for your forum.
Now clicking on Register leads to the login page. No way to register.
Thanks ... Ken

Reply1 reply
Version 1.2

1. Please open the Preferences, tab Popover Windows and uncheck "Close automatically when not in use".
2. Fixed. Thanks.

Mikokim Member IconComment+54

Curious: A certain Leo Mesentsev gives this app five stars. Of course he would; he's the seller. :)

Are sellers/developers allowed to rate their own apps on MacUpdate.com? Clearly that skews the star ratings — especially if not many "real users" have shared their experiences yet.

Reply1 reply
Version 1.2

Ahahahaha ))) I'm sorry, it was an accidental click!! I don't know how to remove it! ))))

Lacwbo Member IconComment+97

No trial period? Forget it! I suppose we are to buy it on blind faith and if we don't like it attempt to get out money back.

Reply1 reply
Version 1.2
Bridge Comm. (Developer)

Why not???
You can download a trial version from http://macpdfviewer.com/wp/downloads/

user icon+0
Version 1.2
user icon+4
Version 1.2
> 4 4


Current Version (1.x)


Downloads 800
Version Downloads 195
License Demo
Date 07 Mar 2014
Platform Intel 64 / OS X
Price $9.99
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